The Drag model validation of slurry pipeline using CFD
Abstract
A number of drag models have been suggested for the interaction of fluid particles in slurry flow over the previous centuries. It is necessary to examine the correctness and applicability of these models. Based on this concept, a comparative analysis of the various drag models is performed for the 0.0549 m diameter slurry pipeline. The research is carried out by using three drag models: Syamlal-obrien, Schiller-naumann and Gidaspow due to their accessibility in the Fluent commercial software. The simulation of the drag model is performed at mean flow velocity range, Vm= 2–5 ms-1 and solid concentration range, Cvf = 10–20% (by volume). The simulation results for solid particle size of 440 μm and density of 2470 kg/m3 are recorded using Eulerian two-phase model with selected drag models at the pipeline outlet. It has been found that the Eulerian two-phase model with Syamlal O’brien drag model gives the accurate and meticulous results with the published data in the literature. Finally, the outcomes of solid concentration contours, solid concentration profiles and pressure drop are anticipated at distinct velocity and solid concentration range for distinct drag models.
